Continuous sand blasting device for stone surface treatment

Abstract

The utility model discloses a continuous sand blasting device for stone surface treatment. The continuous sand blasting device comprises a rack, a conveying mechanism, a sand blasting chamber, a spray gun mechanism and a pressing mechanism, the conveying mechanism is used for feeding and discharging stone plates, and the sand blasting chamber is located in the middle of the conveying mechanism and used for sealing a sand blasting operation area and recycling sand. The spray gun mechanisms are vertically and symmetrically arranged along the conveying mechanism, comprise a plurality of spray gun sets capable of swinging and can conduct uniform sand blasting on the upper surface and the lower surface of the stone slab at the same time. The pressing mechanism is arranged above the conveying mechanism and used for pressing the stone plates and preventing the stone plates from vibrating and shifting in the sand blasting process. Through the spray gun mechanism and the pressing mechanism which are symmetrically distributed up and down, the sand blasting efficiency and the stone plate surface treatment quality are remarkably improved, and the device is suitable for large-scale stone plate machining.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of stone processing, in particular to a continuous sand blasting device for stone surface treatment. BACKGROUND

[0002] The stone sand blasting machine sprays fine sand abrasive to the surface of the stone through a nozzle in the form of high-speed jet flow by compressed air as power. The impact and cutting action of the abrasive on the surface of the stone make the stone surface obtain certain cleanliness and different roughness, improve the mechanical properties of the stone surface, increase the adhesion between the stone surface and the coating, prolong the durability of the coating, and also facilitate the leveling and decoration of the coating. At the same time, the medium surface is roughened, the residual stress of the stone is eliminated, and the hardness of the substrate surface is improved.

[0003] The existing stone sand blasting machine structure comprises a main frame, a sand blasting chamber, a workpiece conveying device, a spray gun group, a sand storage box and a dust removal device. The workpiece conveying device is arranged through the sand blasting chamber, and the spray gun group is arranged in the sand blasting chamber. The spray gun sprays the abrasive to the surface of the workpiece for surface treatment. However, the existing sand blasting machine has the following defects: (1) when subjected to the impact of high-speed sprayed abrasive, the stone plate is easy to vibrate up and down and shift, resulting in deviation of the sand blasting height and position, and the impact force of the sand on the stone plate surface is unstable, and finally the pattern formed by sand blasting is not uniform in depth; (2) the existing sand blasting machine can only realize single-sided sand blasting, and cannot realize double-sided sand blasting. The efficiency of stone processing with double-sided sand blasting requirement is low. UTILITY MODEL CONTENTS

[0004] The utility model solves the technical problem of overcoming the defects of the prior art and provides a continuous sand blasting device for stone surface treatment.

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0006] The utility model relates to a continuous sand blasting device for stone surface treatment, which comprises a rack, a conveying mechanism arranged on the rack for feeding and discharging the stone plate, a sand blasting chamber arranged in the middle of the conveying mechanism and connected with the rack below for enclosing the sand blasting operation area and recycling the sand, a spray gun mechanism arranged inside the sand blasting chamber and symmetrically arranged above and below the conveying mechanism for simultaneously sand blasting the upper and lower surfaces of the stone plate, the spray gun mechanism comprising a plurality of swingable spray gun groups to ensure uniform sand blasting, and a pressing mechanism arranged above the conveying mechanism and spaced apart from the spray gun mechanism for pressing the surface of the stone plate to prevent the stone plate from vibrating and shifting up and down during sand blasting.

[0007] As a preferred technical scheme of the utility model, the conveying mechanism comprises: a transmission motor arranged on the side of the rack, an end of which is provided with a transmission gear for driving the chain to rotate, the power of the transmission motor is 1.5kW, and the rotating speed range is 20-40r / min; transmission rollers are uniformly arranged along the inner side of the rack at an interval of 10-30cm, and both ends of the transmission rollers are fixed to the rack through bearing seats, and the same side end of the transmission motor is provided with a transmission gear; a transmission chain is arranged on one side of the rack and connected with the transmission gears on the transmission motor and the transmission rollers, for driving the transmission rollers to rotate and ensuring the stable conveying of the stone slab.

[0008] As a preferred technical scheme of the utility model, the number of the spray gun groups is at least six, and the spray gun groups are symmetrically distributed along the upper and lower sides of the conveying mechanism for simultaneously sand blasting the upper and lower surfaces of the stone slab; each group of the spray gun groups comprises at least three swing spray guns which are arranged at equal intervals along the conveying direction and can swing perpendicularly to the conveying direction, and the swing angle range is ±30°, so as to ensure uniform sand blasting coverage; a swing shaft is connected with the top end of the spray gun group for supporting the swing spray guns to swing; a swing shaft bearing seat is fixed to the outer wall of the sand blasting chamber for supporting the swing shaft to rotate; a swing shaft driving motor is fixed to one side of the sand blasting chamber, and the movable end of the swing shaft driving motor is connected with the end of the swing shaft through a crank rocker mechanism for driving the swing shaft to swing; and a swing shaft connecting rod is arranged on the opposite side of the swing shaft driving motor and hingedly connected with the end of each swing shaft through a support, for connecting and driving each swing shaft to synchronously link, so as to ensure that the swing phases of all the spray gun groups are consistent.

[0009] As a preferred technical scheme of the utility model, the pressing mechanism comprises: an upper pressing roller which is arranged at equal intervals with the spray gun mechanism for pressing the stone slab on the transmission roller; a pressing roller fixing seat which is fixed to the outer wall of the sand blasting chamber for supporting the upper pressing roller to press downward; a pressing roller connecting plate which is hingedly connected with the upper pressing roller fixing seat at the upper end; a pressing roller shaft seat which is arranged on the inner side of the pressing roller connecting plate and bolted with the bottom of the pressing roller connecting plate, the inside of the pressing roller shaft seat is connected with the rotating shaft of the upper pressing roller through a deep groove ball bearing; a buffer spring and a spring seat, the buffer spring is sleeved in the spring seat, and the spring seat is connected with the pressing roller shaft seat through threads, the pre-tightening force of the buffer spring is controlled by adjusting the screwing depth of the spring seat, so as to adapt to the pressing requirements of stone slabs with different thicknesses.

[0010] As a preferred technical scheme of the utility model, an observation window is further arranged on the side wall of the sand blasting chamber, the size of the observation window is 20cm*30cm, the observation window is located on the front side of the sand blasting chamber and is made of double-layer tempered glass material, the edge of the observation window is sealedly connected with the sand blasting chamber through a rubber sealing strip, and the observation window is used for observing the sand blasting effect of the spray gun mechanism in real time and preventing the sand from leaking out.

[0011] As a preferred technical scheme of the utility model, the material of the upper compression roller is elastic polyurethane, and the surface hardness thereof is Shore A 50-70, so that the surface of the stone slab is prevented from being damaged.

[0012] Compared with the prior art, the utility model has the beneficial effects as follows:

[0013] 1. The sand blasting efficiency is remarkably improved by simultaneously sand blasting the upper and lower surfaces of the stone slab through the upper and lower symmetrical spray gun mechanisms, and the sand blasting efficiency is increased by at least 50% compared with the traditional single-sided sand blasting device, so that the device is suitable for large-batch stone slab processing.

[0014] 2. The swing spray gun in the spray gun mechanism can swing perpendicularly to the conveying direction, and the swing angle range is ±30°, so that the sand blasting coverage is ensured to be uniform, and meanwhile, the compression mechanism adopts the upper compression roller made of elastic polyurethane, and the compression force is adjusted in combination with the buffer spring, so that the stable conveying of the stone slab is ensured, the stone slab is prevented from being displaced and vibrating up and down due to the vibration of the traditional conveying belt, the problem of uneven sand blasting is avoided, and the processing quality of the surface of the stone slab is remarkably improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the utility model, constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation on the utility model. In the drawings:

[0016] Figure 1 It is the overall structure schematic view of the utility model;

[0017] Figure 2 It is the front view of the utility model;

[0018] Figure 3 It is the side view of the utility model;

[0019] Figure 4 It is the top view of the utility model;

[0020] Figure 5 It is the structure schematic view of the spray gun mechanism in the utility model;

[0021] In the drawings: 1, rack; 2, conveying mechanism; 3, sand blasting chamber; 4, spray gun mechanism; 5, compression mechanism; 21, transmission motor; 22, transmission roller; 23, transmission chain; 41, spray gun group; 42, swing spray gun; 43, swing shaft; 44, swing shaft bearing seat; 45, swing shaft driving motor; 46, swing shaft connecting rod; 51, upper compression roller; 52, compression roller fixing seat; 53, compression roller connecting plate; 54, compression roller shaft seat; 55, buffer spring; 56, spring seat. DETAILED DESCRIPTION

[0022] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0023] Wherein the same reference numerals in the drawings all refer to the same components.

[0024] As Figures 1-5 shown, the utility model provides a kind of continuous sand blasting device of stone surface treatment, comprising: rack 1;Conveying mechanism 2 is set to the rack 1, for the feeding and discharging of stone slab;Sand blasting chamber 3 is set to the middle part of the conveying mechanism 2, and is connected with the rack 1 below, for closing sand blasting operation area and recycling sand material;Lance mechanism 4 is set to the inside of the sand blasting chamber 3, and it is symmetrical arrangement along the up and down of the conveying mechanism 2, for the upper and lower surface of stone slab is simultaneously sand blasted, lance mechanism 4 includes multiple swingable spray gun groups 41, ensure that sand blasting uniformity;Pressing mechanism 5 is set to the above of the conveying mechanism 2, and is interval set with the lance mechanism 4, for pressing the surface of stone slab, prevent stone slab from vibrating displacement in sand blasting process.

[0025] In the embodiment, granite stone slab with the size of 2000*1000*25mm is taken as an example, and the initial sand blasting pressure of the sand blasting device is set to 0.6MPa, and the swing frequency of the spray gun is 10 times / min.

[0026] The use mode of the utility model is as follows:

[0027] 1, the sand material recycling system of sand blasting chamber (3) is connected with external sand material supply system, the compressed air pipeline of lance mechanism (4) is connected with external air source, to ensure that air pressure is stable;Turn on the power, start transmission motor (21) and swing shaft driving motor (45), check whether conveying mechanism (2) and lance mechanism (4) are normal operation;

[0028] 2, the stone slab to be handled is placed on the transmission roller (22) of conveying mechanism (2), to ensure that the stone slab is placed stably, according to the thickness of the stone slab, the spacing between the upper compression roller (51) of pressing mechanism (5) and transmission roller (22) is adjusted, to ensure that the stone slab is stably pressed, the pressing force is adjusted by buffer spring (55), to avoid the damage of the surface of the stone slab;

[0029] 3, start swing shaft driving motor (45), drive swing spray gun (42) to swing perpendicular to the conveying direction, the swing angle range is ± 30 °, open compressed air valve, start lance mechanism (4), start sand blasting treatment to the upper and lower surface of the stone slab.

[0030] 4, through the observation window on the side wall of sand blasting chamber (3), real-time monitoring of sand blasting effect;According to the sand blasting effect, the swing frequency, sand blasting pressure or sand material flow of sand blasting mechanism (4) is adjusted.

[0031] 5、After sandblasting, the conveying mechanism (2) conveys the stone plate to the discharging area.

[0032] Further, the conveying mechanism 2 comprises a transmission motor 21 arranged on the side of the rack 1, the end of which is provided with a transmission gear for driving the chain to rotate, the power of the transmission motor 21 is 1.5kW, and the rotating speed range is 20-40r / min; transmission rollers 22 are arranged along the inner side of the rack 1 at an equal interval, the interval is 10-30cm, and the two ends are fixed on the rack 1 through bearing seats, and the same side end of the transmission motor 21 is provided with a transmission gear; a transmission chain 23 is arranged on one side of the rack 1 and connected with the transmission gears of the transmission motor 21 and the transmission rollers 22, for driving the transmission rollers 22 to rotate and ensuring the stable conveying of the stone plate.

[0033] In this embodiment, the transmission motor (21) is started to drive the transmission roller (22) to rotate at a speed of 30r / min, so as to convey the stone plate stably into the sandblasting chamber (3).

[0034] Further, please refer to the attached Figure 5 The number of the spray gun groups 41 is at least six, and they are symmetrically distributed on the upper and lower sides of the conveying mechanism 2, for simultaneously sandblasting the upper and lower surfaces of the stone plate; each group of the spray gun groups 41 comprises at least three swing spray guns 42, which are arranged at equal intervals along the conveying direction and can swing perpendicularly to the conveying direction, the swing angle range is ±30°, which ensures uniform sandblasting coverage; a swing shaft 43 is connected with the top end of the spray gun group 41, for supporting the swing spray gun 42 to swing; a swing shaft bearing seat 44 is fixed on the outer wall of the sandblasting chamber 3, for supporting the swing shaft 43 to rotate; a swing shaft driving motor 45 is fixed on one side of the sandblasting chamber 3, and the movable end thereof is connected with the end of the swing shaft 43 through a crank rocker mechanism, for driving the swing shaft 43 to swing; a swing shaft connecting rod 46 is arranged on the opposite side of the swing shaft driving motor 45 and hinged with the end of each swing shaft 43 through a support, for connecting and driving each swing shaft 43 to synchronize linkage, so as to ensure that the swing phases of all the spray gun groups 41 are consistent.

[0035] In this embodiment, the swing shaft driving motor (45) is started to drive the swing spray gun (42) to swing at a frequency of 10 times / min, after opening the compressed air valve, the spray gun mechanism (4) is started to begin sandblasting the upper and lower surfaces of the stone plate.

[0036] Further, the pressing mechanism 5 comprises: an upper pressing roller 51, which is arranged at equal intervals with the spray gun mechanism 4, and is used for pressing the stone slab on the conveying roller 22; a pressing roller fixing seat 52, which is fixed to the outer wall of the sand blasting chamber 3, and is used for supporting the downward pressing of the upper pressing roller 51; a pressing roller connecting plate 53, the upper end of which is hinged to the pressing roller fixing seat 52; a pressing roller shaft seat 54, which is arranged on the inner side of the pressing roller connecting plate 53 and is bolted to the bottom of the pressing roller connecting plate 53, the inner part of the pressing roller shaft seat 54 is connected with the rotating shaft of the upper pressing roller 51 through a deep groove ball bearing; a buffer spring 55 and a spring seat 56, the buffer spring 55 is sleeved in the spring seat 56, and the spring seat 56 is connected with the pressing roller shaft seat 54 through screw threads, the pre-tightening force of the buffer spring 55 is controlled by adjusting the screwing depth of the spring seat 56, so as to adapt to the pressing requirements of stone slabs with different thicknesses.

[0037] In the embodiment, according to the thickness of the stone slab (20mm), the distance between the upper pressing roller (51) and the conveying roller (22) is adjusted to 25mm.

[0038] Further, an observation window is further arranged on the side wall of the sand blasting chamber 3, the size of the observation window is 20cm*30cm, the observation window is located on the front side of the sand blasting chamber 3, and is made of double-layer tempered glass, the edge of the observation window is sealed and connected with the sand blasting chamber 3 through a rubber sealing strip, and is used for observing the sand blasting effect of the spray gun mechanism 4 in real time, and preventing the sand from leaking out.

[0039] In the embodiment, according to the sand blasting effect, the swinging frequency of the spray gun mechanism (4) is adjusted to 12 times / min, and the sand blasting pressure is adjusted to 0.7Mpa.

[0040] Further, the material of the upper pressing roller 51 is elastic polyurethane, and the surface hardness thereof is Shore A 50-70, so as to avoid damaging the surface of the stone slab.

[0041] Finally, it should be noted that: the above only describes the preferred embodiments of the utility model, and is not used for limiting the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical scheme recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A continuous sandblasting device for the treatment of stone surfaces, characterized in that, It includes: Frame (1); conveying mechanism (2) is arranged on the frame (1), for the feeding and discharging of stone plate; Sand blasting chamber (3) is arranged in the middle of the conveying mechanism (2), and is connected with the frame (1) below, for closing the sand blasting operation area and recycling sand; Spray gun mechanism (4) is arranged inside the sand blasting chamber (3), and is symmetrically arranged along the up and down of the conveying mechanism (2), for sand blasting to the upper and lower surfaces of stone plate at the same time, spray gun mechanism (4) includes a plurality of swingable spray gun groups (41), which ensures the uniformity of sand blasting; The pressing mechanism (5) is arranged above the conveying mechanism (2), and is arranged with the spray gun mechanism (4), for pressing the surface of stone plate, preventing the stone plate from vibrating and shifting up and down during sand blasting.

2. A continuous sandblasting device for the treatment of stone surfaces according to claim 1, characterized in that, The conveying mechanism (2) includes: transmission motor (21) is arranged on the side of the frame (1), and the end is provided with a transmission gear for driving the chain to rotate, the power of transmission motor (21) is 1.5kW, and the rotating speed range is 20-40r / min; Transmission roller (22) is uniformly arranged along the inner side of frame (1) with a spacing of 10-30cm, and the both ends are fixed on the frame (1) through bearing seat, and the same side end of transmission motor (21) is provided with a transmission gear; Transmission chain (23) is arranged on one side of the frame (1) and connected with the transmission gears on the transmission motor (21) and the transmission roller (22), for driving the transmission roller (22) to rotate, ensuring the stable conveying of stone plate.

3. A continuous sandblasting device for the treatment of stone surfaces according to claim 1, characterized in that, The number of spray gun groups (41) is at least six, and they are symmetrically distributed along the upper and lower sides of the conveying mechanism (2), for simultaneously sand blasting the upper and lower surfaces of stone plate; Each spray gun group (41) includes at least three swing spray guns (42), which are arranged equidistantly along the conveying direction and can swing perpendicular to the conveying direction, with a swing angle range of ±30°, to ensure uniform sand blasting coverage; Swing shaft (43) is connected with the top end of the spray gun group (41), for supporting the swing of the swing spray gun (42); Swing shaft bearing seat (44) is fixed on the outer wall of the sand blasting chamber (3), for supporting the rotation of the swing shaft (43); Swing shaft drive motor (45) is fixed on one side of the sand blasting chamber (3), and the movable end thereof is connected with the end of the swing shaft (43) through a crank rocker mechanism, for driving the swing of the swing shaft (43); Swing shaft connecting rod (46) is arranged on the opposite side of the swing shaft drive motor (45), and is hinged with the end of each swing shaft (43) through a bracket, for connecting and driving each swing shaft (43) to synchronize linkage, to ensure that the swing phases of all spray gun groups (41) are consistent.

4. A continuous sandblasting device for the treatment of stone surfaces according to claim 2, characterized in that, The pressing mechanism (5) comprises: an upper pressing roller (51) which is arranged at equal intervals with the spray gun mechanism (4) and used for pressing the stone slab on the transmission roller (22); a pressing roller fixing seat (52) which is fixed to the outer wall of the sand blasting chamber (3) and used for supporting the upper pressing roller (51) to press downward; a pressing roller connecting plate (53) which is hinged to the upper end of the pressing roller fixing seat (52); a pressing roller shaft seat (54) which is arranged on the inner side of the pressing roller connecting plate (53) and bolted to the bottom of the pressing roller connecting plate (53), the inside of the pressing roller shaft seat (54) is connected with the rotating shaft of the upper pressing roller (51) through a deep groove ball bearing; a buffer spring (55) and a spring seat (56), the buffer spring (55) is sleeved in the spring seat (56), and the spring seat (56) is connected with the pressing roller shaft seat (54) through screw threads, the pre-tightening force of the buffer spring (55) is controlled by adjusting the screwing depth of the spring seat (56) to adapt to the pressing requirements of stone slabs with different thicknesses.

5. A continuous sandblasting device for the treatment of stone surfaces according to claim 1, characterized in that, An observation window is further arranged on the side wall of the sand blasting chamber (3), the size of the observation window is 20cm*30cm, the observation window is located on the front side of the sand blasting chamber (3) and is made of double-layer tempered glass, the edge of the observation window is sealed and connected with the sand blasting chamber (3) through a rubber sealing strip, and the observation window is used for observing the sand blasting effect of the spray gun mechanism (4) in real time and preventing the sand from leaking out.

6. A continuous sandblasting device for the treatment of stone surfaces according to claim 4, characterized in that, The material of the upper pressing roller (51) is elastic polyurethane, and the surface hardness of the upper pressing roller (51) is Shore A 50-70, so that the surface of the stone slab is not damaged.

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